Parents and teachers starting new clubs often ask me where to buy chess sets and equipment. There are many good chess suppliers online.
I buy chess sets, demo boards, chess books, score books, and key chain pieces (as incentives) from WholesaleChess.com. They provide good service, volume discounts, and free shipping if your order is large enough.
If you would like to see an item before buying it, large tournaments like the NC K-12 Chess Championship and the NC Open have chess stores onsite.
If your chess club has been using the same pieces for several years, you may have some broken kings or rooks (as they seem to break more easily than other pieces). You could buy a new set of pieces from any chess supplier. I also found that ChessHouse.com sells individual pieces at reasonable prices and with good service.They give you a discount if you buy 10, 50, or 100 pieces.
After you have bought enough chess sets for your club, you may want to buy some digital chess clocks to help students prepare for tournaments. I have bought DGT North American clocks from Amazon.
I have also bought a few items from US Chess Federation Sales. A friend of mine buys his club’s supplies from American Chess Equipment. If you are looking for a special chess set, House of Staunton has an excellent selection of beautiful sets.
What other suppliers do you recommend?